G3500J Petroleum Engines Caterpillar


Camshaft

Usage:

G3520J N22


Illustration 1g06148613
(1) Left-hand camshaft assembly
(2) Right-hand camshaft assembly

Table 1
Specification for 382-5086 Camshaft Gp 
Item  Qty  Part  Specification Description 
Thickness of the groove in a new camshaft assembly is 8.75 ± 0.05 mm (0.344 ± 0.002 inch)
5B-5821 Dowel  Extension of the dowel is 12.0 ± 0.5 mm (0.47 ± 0.02 inch)
4N-1650 Dowel  Extension of the dowel is 22.0 ± 0.5 mm (0.87 ± 0.02 inch)
7N-3218 Thrust Washer  Thickness of a new thrust washer is 8.50 ± 0.05 mm (0.335 ± 0.002 inch)
Diameter of bearing journals in a new journal camshaft assembly is 85.88 ± 0.02 mm (3.381 ± 0.001 inch)
Bore in camshaft bearing after installation is 86.00 ± 0.06 mm (3.386 ± 0.002 inch).
16  5P-0076 Bolt  Torque to 55 ± 7 N·m (41 ± 5 lb ft)


Illustration 2g03203436

Table 2
Item  Qty  Part  Specification Description 
Use the following procedure to determine the camshaft lobe lift: 
1. Measure camshaft lobe height (H).
2. Measure base circle (J).
3. Subtract the base circle (J) from the camshaft lobe height (H). The difference is the actual camshaft lobe lift.
Specified camshaft lobe lift: 
Inlet lobe is 7.500 mm (0.2953 inch).
Exhaust lobe is 8.699 mm (0.3425 inch).

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